Sash cord fastener



D 2 1953 E. M. TRAMMELL, SR, ET AL SASH CORD FASTENER Filed Oct. 11, 1948 2 Sheets-Sheet l INVENTORS EARL M-TRAMMELL SR. EARL'M.TRAMMEL.L JR.

ATTORNEY Patented Dec. 29, 1953 6. r q sempli i an: ...di ash Q-b mm the fra' gm novel 'uncigi y g showing a form of counterbalance of spring loaded type suitable for use in, the present assembly.

Referring by characters of reference to the drawing for description of the parts and their functions, the upper sash is indicated generally at it, and the lower sash generally designated at H. Each such sash comprises sash stiles i2 and [3, check rails l4 and it, the usual inside casing, stool H, apron l8, and a blind stop H3, together with other usual framing and sash elements, all familiar to those skilled in this art. There may, however, be mentioned for completeness, a vertical or pulley stile indicated at 25, into a groove or channel of which is set the parting bead 23.

The sash assembly illustrated is of a type including provisions for guiding each of the upper and lower sash to assure smoothness and ease of operation. and is further of such nature as to facilitate removability of the sash, as heretofore mentioned. These latter provisions include, at the opposite sides of each sashway, a metal track element provided with suitable fastening portions 3|, by which each such rail is kept in place in vertical position within the sashway. The term sashway as employed herein, denotes the several channel-forming elements within and along which each sash it or i I is guidedly movable and restrained to normal operation in its own plane. for example as to the upper sash, the sashway is formed by the members 26, 25 and 9, at each of the opposite vertical margins, together with the transverse or horizontal elements at the ends of the window frame.

Coacting with the rails 39, there are provided in the assembly shown, a plurality of roller fixtures, some of which are generally indicated at 34, and others, later described, at 55 and 55', and 85 and 85, which are of greater length and in clude certain connector elements, later described. Those roller fixtures generally designated 3d, are at the opposite lower margins of each sash as shown, and need include only a short U-shape metal member the sides of which are bridged by a roller axis element such as pin (Figs. 3, l and 7) about which rotates a roller 3i of metal, fiber or other material making for long life and quiet operation. Each roller 31 is provided with a V groove 40, and each of the rails 33 is provided with a beveled or apexed ball or roller-engaging U surface portion, as will appear from Fig. 3 for example.

By preference a substantial clearance is provided, considerably more than usual in a sliding sash assembly, between the pulley stiles and each adjacent vertical sash stile, this abnormal spacing being provided along each of the opposite sides of each sash, as is indicated at 4!.

For the purpose of permitting easy removability of the sash, each of the rails 38 on one side of the frame, in this case the right hand side, is provided in particular locations along the sash way, with recessed or cutaway portions preferably, but not strictly necessarily. of a generally C-shape, these being two such recesses, indicated at 43, for each of the rollers 31 on the right hand side (Fig. 4) of the lower sash. Such cutaway portions in the rail at the right hand margin of the upper sashway, are relatively inverted, and are indicated at 44, one of these being shown by Fig.5. This particular conformity of the cutaway parts of the rail, is imparted so as to include a sloping rectilinear portion in each recess to impart to the rollers under certain conditions a 4 lateral camming effect, the purpose of which will later more fully appear.

The clearance provided laterally of each of the sash, as indicated at M, together with the provisions of the several cutaway portions 413 and it, enables each of the sash when it is moved to bring its pulleys 3'! opposite the companion cutaway portions, to be laterally shifted, i. e. in the plane of the sash and to the right (Figs. 4 and 7) the clearance further being such that when thus moved, the sash may be withdrawn by a forward movement of its opposite margin, which will now clear the'adjacent stop elements. Once this is done, the sash may then be drawn further to the left in its own plane, thence outwardly and free of the several elements of the window structure.

The structure as thus far described includes certain features of a novel removable sash assembly disclosed and claimed in a copending application of these applicants, filed May 11, 1949 under Serial No. 92,572, and entitled Window Units and Accessories. The present application distinguishes from said copending application in being directed to the features and elements providing for automatic connection and disconnection of the counterbalance to the sash. It should here be noted that the term removable, and related and derived terms, are not intended to 1111-- part any necessary restriction of present subject matter, as to its application and use, to sash and sash assemblies of the particular nature herein disclosed, the hardware, fixture and connector items to be described being susceptible of application to numerous other forms of sliding sash.

In the example shown by the drawings, it is contemplated that removability be provided for when each sash is moved to a more or less predetermined location in its own sashway. A a practical matter, this removal position is best provided for as each sash approaches its maximum open position, e. g., the upper sash to will, for purposes of removal, be brought to or near a bottom position, and the lower sash will be moved to or near its upper most position, This arrangement assures the normal guided actuation of the sash throughout all or most of its usual range of opening and closing movement.

With the foregoing noted for a general understanding of purpose of the several fixtures, connectors and other hardware items, it may be mantioned that each sash is provided above and generally in line with its sashway, with one or a pair of counterbalance units. Since these nuts per se form no part of the present improvements, a general reference thereto is sufficient by noting that, as shown by Fig. 9, the unit generally indicated at 59 contains a spring, usually one of clockspring type (not shown), together with a spring arbor and spring anchorage within the casing, the spring being operatively connected to a tape indicated at 5! and provided with an attachment loop 52, the unit 5! being provided with attachment extensions 53 and 54 suitably apertured for mounting in the upper portion of the window frame. It has been found that. in a guided rolling sash such as disclosed, windows of usual or narrow width are sufficiently counterbalanced with a single unit es, whereas in windows of greater width, a pair of counterbalances are usually provided, one above each side of each sashway. As to the connection from sash to counterbalance, a flexible metallic tape 5| is shown; according to manufacturing preference and availability it will be understood that such a flexible tension element may consist of a cord. chain, rope or other spasm equivalent, the term. fo l? beipg, h reinem:

, ployed, in a generic sen e; and w hqutani fin. tended restriction to this particular typepi ten sion element.

Proceeding first to describe .generally the Ila; ture of the connectors or fixtures servin ,the gen-f eral purposes of arresting'and pos' ioning the counterbalance cord andassumingfpr brevity of description that each sash be egu'ipped with dual counterbalance units, the desci i ion of out of the plate portion 58, and with a second such projection extending horizontally and indicatedatel.

A second fixture consistsof ,a plate element generally, designated at 65 (Figs. 7 and 8) This is provided with a right angular. outstruclg portion 66. The plate portion of fixture B5 is oj a generally rectangular form, and is extended to provide an integral projection or tongue 61, the outer or free end marginof which is characterized by divergent sides, as will appear from Fig. 7, and just above this divergent portion is I a recessed or shouldered region 68. Near its upper margin {the plate or body of this fixture is apertured as at I0 to receive the connectingloop 52. throughwhich the fixture is connected to the cord, tapejor th e like, 5 L,

A third fixture of this assembly coacting principally with the second such fi xture 65,,isgenerally indicated at II. This member is or may be formed entirely of, a single elernentyof resilient spring stock, such as spring steel. 1 It is in the nature of a spring clip, and includes a normally vertical mounting base ortangn which is or may be secured as by rivets 'l3 to an adjacent rail 30,

being thus fixed in position in this Sea ay-. The

base 72 of the third fixture is 'continueddownwardl'y. (Fig. 8) throughnanv ofisetfportion, into a vertical part 74, this latter being folded' back uponitself to provide a pairof spacedj guide plates, one consistingoi the body part 74, spaced from and parallel to which is plate 75.. These guide plates are'ealch provided with a divergent upper end, so that thepas'sageway between the plate m emberfi l 'l 5 is entered by. a converging throat as will later 'apLpear, by

the tongue and plate of fixture fiii Further in reference to thethird fixture 1 I this may as shown, extend below. thelportion I l-+15 through a right angle bend, thence to forma vertical spring jawv I6, this jawbeing'bentlback upon itself to form a companionjresi1iently related jaw Ti with an inturnedfand partly folded end 36., As will appear from Fig, 7"'lo,wer portion, the particular formation given ,jthefree end of jaw TI is such that the part 8Q 'wi ll, when the tongue 5'! enters the space between, thefjaws,

serve to interfit the shoulder ,formation '68 "In this mannenthe tongue 61 and the spring jaws 16. and. T8, are firmly yet .detachably, interfitted,

for temporary. securernent .purpos'es;,f Inasmuch as the second fixture 65 is'secured'tothe cord or th pp s te, guide;

tongue v I 00. This third 65. i ise a ne thefpath; 9i merg rs a e ed oneui tape SI and thelatterothe counterbalance, it new e emes appare t'that; wnenfix urescsand H constituting th arts or a d'etaclfiabl con hector, make the'conneetion noted, the spring" loading of the counterbalance 50 on the cord or taper" is efiectively"resisted'by the spring; jaws and tongue, and thus th'bf'a'l'ance'action isarrested to permit removal o'r the sash; as will ap pear, andf will' be automatically restored upon reinsertion of the sash.'

Afurtherfeature'providing for a lateral interloci; incidentfto connect-ion ofthe fixtures 55 andtfi, is shown by Fig.7 as an outstruck point element 8], teseseen in Fig, '7, which; with the parts i 551and 65; connected; extends through an aperture 82;"

It "will/have been observed from Fig. "7 that, assuming" a dual (i0unte'rbala'lr'ice connection to the uppersash ID, the assembly and coaction of connector elementsattheIefthand side (Fig. 7) is orniay be identical-tothat'described, the parts therein being indicated-by prime but otherwise corresponding reference characters, the parts of thethree 'fixture'sbe'ing identical at opposite sides, except for formationdn right and left handed relationl It has been notedas a preference that'the lower sashb brought fully in ornear its maximum raised position, to permit removal thereof rom the 'sashway, and for this reason 'a' somewhat modified f ornllof the companion fixtures forming the counterpalance 'a'r're'stor; are utilized in connection with thelowersash' 'In this case (Fig. 4) a first or slash' inounted fixture generally designated at "85 consists of a mounting plate 'apertured'to receive and rbvided'withgmounting crew 6- rn efi i 'a ely ne o a to e base plate is are; gener l y r t ingular shape one f'or a pair of which may be used, 'Struck out of pl'ate'j8l is a projection 88;,

while part 'of the lower margin of'plate 8Iji s bent downwardly at f an smear n similarly to" the portion to! (Fi .6) syndicated at so.) I

The second fixture for thelower sash II is afiixed to the counterbalance 'through its cord or, tape, andis generally indicat d at (Fig. 6). The element 95 prelferably consists of a substantially rectangular plate element, the lower marginof which isjacutelynpturned and indicated at 96, the latter proyidedwith an aperture in the region 'of the fold between '95 and I '96, and india d. at. for the. menti n 31 po nt P t 98, on fixture 85 (Fig e) 'rele'asab1y to hold the r and c d. messa es a e a displacem t; e. late 11 9 3? QQ' t sec n tur 5 i lu es n' rwe dlre t nd f pe d n u L- id. at ne sid i h i ne'u p a e i apertured as at I to receive the connecting loop S'Zseryingto attach thisfixture to'the tape or cord 5|;

Coastin articul es with. the t ngue. J00 is e r ese k i; time; e ziflie taii r i hi h onf r s Latletist s11 ta .lly .t or socket strucewer or oth a a t.i fi e,... h. with. the rg r endz i th ock t ..downwerd presented for therecepfi. I when the sash; is brou .1 this] redetermined q io ,l th I00, Attach ent of the socket st uc u e "o .thirdjjfixtur is; nven ent, y prowhich ma be ded' or? y an; ex ensi veted: er am il.3o. A's bestiappear .rrom 1..

58 on thetongue. Since fixture 55 tened aspect to the interest of economy of material and space requirement. The socket fixture I02 may be formed of a single element of spring metal, with the portion I03 turned outwardly, thence across, then parallel to the out turned side, so that the tapered sides in effect serve as jaws to grip the tongue I00.

It will now have become evident that as the lower sash is brought substantially to its maximum open position, the fixture 95 following the sash movement, the tapered tongue I will enter the socket I02, and during such relation of parts, the counterbalance with tension on the cord or tape I will maintain the elements 95-I00--I02 in interfitted position, thus enabling the separation of the fixture 85 from fixture 95 incident to manipulation of the sash, and upon reinsertion of the sash after removal, reengagement of portions 90 and 96 with the lowering movement of the sash, again separates I00 from the socket I02 and enables a normal counterbalance sash actuation.

Assuming the upper sash III to be in operative position in the sashway and that it be desired to remove same, this sash is lowered to a position slightly above that which, but for present improvements, would be its lower limit. In this position, the rollers 31 will be positioned opposite the cutaway or recessed portions 44 in the adjacent rail, substantially as shown by the right hand side of Fig. 7, it having been noted as necessary to provide the recesses 43, 44 in the rails, on only one side of the sashway, for example in the right hand rails of each, as shown by Figs. 4 and '7. There being one such recess such as 44 for each of the paired rollers 31 on the right hand side of the assembly, the sash is first given a slight lifting movement of the order of oneeighth to one-fourth inch, this serving the purpose of lifting the pointed portions 8I--8I' each from the adjacent opening 82 or 82'. Following this initial slight lifting movement, the cutaways 44 will now permit a substantially lateral shifting movement of the sash, in this case to the right of Fig. 7. This movement has the effect of slidably disengaging the element 60 (Fig. 8) from overlying relation to the acutely upturned marginal portion of fixture 65, such portion being indicated at 59. In the case of the left hand side of the assembly, such movement of element 60' will take place away from the pulley stile 25 on the left hand side (Fig. I) Incident to this shifting movement each of the pulleys 31 will enter the cutaways or recesses 44, and the left hand margin of the upper sash I0 will now clear the adjacent stop structure, and the margin of the sash now thus cleared, may be moved freely to the left and at the same time lifted, so that fixtures 55 and B5 and their prime numbered counterparts, will have become separated and the normal operative connection therebetween is broken.

Prior to the aforesaid shifting and lifting movements of the sash, it will have appeared from earlier description that the fixture 55 carrying tongue 61, will have been brought downwardly by the corresponding movement of the sash, and to the extent to bring the tongue 61 to a position between the spring jaws I6 and ll of the third or spring fixture II. The divergent nose portion of the tongue 61 first acts to spread the spring jaws, and as it further enters the space therebetween, the reentrant end portion 80 of jaw 11 will spring back (to the right in Fig. 7) into firm interfitting engagement with the shoulder is secured to the balance cord or tape 5i, it will now have appeared that when the fixtures 65 and II are connected as described, the balance cord, hence the counterbalance unit 50 are retained in status quo, the balance thus temporarily being arrested in its function and the cord or tape held captive in a position to facilitate and assure its reconnection to the sash when desired. Such reconnection may take place as is intended, solely by manipulation of the sash.

Assuming now that it be desired to reinsert the upper sash I0, the sash is applied to the sashway with its right hand margin (Fig. '7) in a position about to enter the right hand edge of the sashway, and the left hand sash stile brought as close as possible to the parting bead. By a further lateral shifting movement the right hand margin is brought completely into the sashway following which the entire sash may easily be brought into its normal operative plane. The ensuing step is a slight lifting movement of the sash which causes each of its right hand pulleys 3! to engage, with a lateral camming efiect to the left, the inclined surfaces 45 of the adjacent recesses 44. Continued lifting movement of the sash brings the outstruck portion SI upwardly into abutting engagement with the projection 65 of fixture 85, with the result that the tongue 81 is drawn outwardly of its position between the spring jaws I6 and 11. Following such movement, fixture 65, under the tension of the counterbalance cord, is quickly raised to bring the hookforming element 59 of this fixture into engagement with the companion acute abutment 60, at which time the sash and the counterweight are again connected for normal balanced sliding actuation.

The actuation of the lower sash and its several connectors although briefly above referred to, may be more completely described by noting that the lower sash is for removal, brought somewhat short of the highest position in its own sashway. With the sash and elements in the sashway thus related, and the tongue I in socket structure I82, the rollers 31 of the lower sash are approaching the cutaways 43 of the adjacent right hand track element as shown by Fig. 4. The sash may now be given a short lifting movement to bring the portion 9!; out of and away from flange 96. Further displacement movement of the sash (now free of the counterbalance), in its own plane, but upwardly and to the right of Fig. 4, enables rollers 3! to enter cutaway portions 43, followed by withdrawal of the left hand side of the sash, then complete removal as heretofore described in reference to sash I0.

After removal of the lower sash, it is reinserted after the manner described with reference to sash I0, namely, by insertion of the right hand sash stile I3 of sash I I depthwise as far as possible into the right hand sashway. The left hand stile I2 may now be depthwise restored to bring the sash to its normal plane of operation. At this time it should be noted that the coacting abutment elements and 86 are usually laterally displaced. However, with the sash restored to the sashway, a first downward movement thereof causes the camming surface 45 of recess 43 to act on the adjacent rollers 31 to shift the entire sash to the left (Fig. 4) and thus to slide member 90 of the sash carried fixture, into overlying relation to and abutted engagement by the hooklike flange 96 of fixture 95. This action will occur to an extent such that the point 98 will, by the weight of the sash, enter and be seated in Mthe opening 911 ,(Fig,, 16 and thus restore the lof' sashfui to o erative'position Continued downward. movement of the mwer sash wilLfno'w obviously, serve to withdraivlthe tapered tongue 1-0 from the socket eminent .102, and fact functionally to restore to thes ash, the spring loading ofthe balance-unit 5i! actingthroughthe"cord all and gfixtures 95 and. 85 to complete theuconv negation to'the adjacentmarginfofuthe ,sash.

Although .the invention has been described by detailed reference tocertainiprferred;forms bf structural embodiment, the detail of H disclosure should,be. understood,ls'olely in an 7 instructive, and not in. any limiting "sense, variants being possible in the several fi'xtuifes 'aswell is in the sash aseinbly and guiding means, all within thelintended scope ofnthehjclaims (hereunto "appended. ,c

'.We claim asiour invention:

1. twopartvfixture to 'provide "a temporary anchore g e for ahalance cor'd in .a. slidable sash assembly, one er theparts of the fixture including aten gue in the form of a plate elem'e'nt havinga shoulder spaced from its free end/the otherjp'art being-provided;with spaced resilient'guide plates andresilient. tongueeengaging. jaws; the said guide plates beingadzpted to dirctlthetongne into .po sitiontbetween the jaws, one of saidjaws avi ngfaiportiora; formed to engage and detachah'ly to fit the-shoulder ofatheftongue, jone of said, fixturezparts being' secui-ed tolthe cord and 1 thaother being fixe'd alongthe s2 'sh'way, whereby whe'n thetongue and jzwsarebronght into engaga'im, the cord isipositioned for detachment hem, and further. connection to the. sash.

The cpmbmation and arrangement of eler'n'ents as recited bfy claimrl ,lbu t further characteriz ed in that the 'resilientjaws include a substantially vertical spring jaw formed through a a right angle bend 'belo'w the-"guide plates, and a -1' resiliently relatedcompanion jaw, formed through a reversal or said vertical spring ja'w, th'efsaid companion. jaw being provided with an finturned endpension adapted to. engage the shoulder or the tongue upon insertion 'of the tongue into position between the jaws. I 3, In a device for arresting a counterbalance cord 7 in removable Lendingsash, assemblies 1 equipped with acounterbalance and ,cord; a fixture element; adapted for mounting bn ant, edge portion of theslidablesash,,andiincluding a horizontal arm projeetingfrom such portion, said armbeing-in, the formyof-a plate and disposed at an acuteanglemelative to the-plane of the -sash, a plate element carried -by., s'aicl cord and i having a an acutely upturned portion normally disposed; substantially parallel to. said arm, 7 said plate elements and its upturned portion being idown'wardlyw convergent :with its-permeating re gion :normallyarranged eubstantiallyv parallel to said arm to provide ahook-adapted,tordetachable engagement to said arm on the sash fixture element a vertieal tongue on the said plate ele-- and resilientgripping means arranged for mounting in a sashway, in the path of the sliding sash; :-said -*means :comprising iresilient: tongueengaging Jaws 4 k and spaced guide, plates, said guide plates being adapted to direct the tongue between the jaws, said tongue having ash'oulder,

* one "of the-"jaws having anabntment portion aidaptedjdetachably-togri' aid-shoulder of the tongue upon-insertion-of the tongue into position between the jaws for nullifying the action of the counterbalance cord incident to removal of the sash.

v second. fixture secured to .lth'e 00rd andv compri ng a h atc m ntan hm ,7

c nv nt a ha na' 'ts'cbn mally-arrange parallel tolan'd Jr rjQQfiQY} 0.,f. h $t S d and a third fixture, ad tea, to lb e it qrlv inaihee a h ay ii folded :megioninormallyearran --ting discohheetidn the th flui en r h lsashjremov c fix sash, {said{fixtiire'havinglamlateralv mamma ture,, incluging1 an. end. am not nt .i mlbf in t a fiharaateriaed by adi's no sbgui movement of the second said fixt fi t e ,com r e nea. Hei i wil ed-to-receive theend pr sliding sash as eva romeachm nteto l es s netsaehiai di i onisaidzplate; a seg nd- F counterbalance o d i havingits :glower margin reg on; turne wardly at, an-vacutev-angla hefnlate and itsgrp- -turned= -marginal; region .,-,ha,v ing its qonn cting edt paral to l receiving the; proj eating arm on the {1313 1}? :ofithe by relative vertieal.;niovement of L the sash-sand cord; the plate Iof; thevsepcondilfixture further. ineluding a- .-tapered end;projectioni,;andg;:a fixture to beanchoredi-in thessashwayalongithe 1 pat-hot sash movement, the third fixturezincludthi i'n'g aniopemend 'socket; saidasocket. havingresilient-..-jaws :and spaced guide plates the ,jaws

' being tapered u'to i-icontorm substantially to. the

taper of said endvprojiection, theaguidegpl'ates being adaptedatoedirect. the. -,tapered= en'd prbjection between the. taperedjaws, said tapered end projection being engaged by andgrippedvbetween th a tapered resilintgiaws ltoiarrest the counter- 10 ance hordfand secondfixture, whil'e permi't- I 4 first said fixtureand thev-sa'sn-i frbm theseona saia fixtui and the bannee ebrd.

e. edemei balaeee retainer for use with em'ov'ablesliding -sashasseinblies rawhich the sliding sash-operates inragsasnway, and- 1s proa thre-part"connector --'devic bemu ed or mg an attachment -plate,- a ena-mate: a eeeoea- 'fiituie ai 1 -ede-portienof the slid 11 wardly at an acute angle, the plate and its upturned marginal region being downwardly convergent to its connecting folded region, the con.-

necting folded region being normally arranged parallel to and receiving the projecting arm on the plate of the first said fixture, the plate of the second fixture further including a tapered end projection, and a third fixture provided with a base portion anchored in the sashway along the path of sash movement, the third fixture further including an open-end socket, said socket having resilient jaws and spaced guide plates, the taper of the jaws conforms substantially to the taper of said end projection, the guide plates being adapted to direct the tapered end projection betweenthe tapered jaws, said tapered end projection being engaged by and gripped between the resilient taperedjaws to arrest the counterbalance cord and second fixture, while permitting disconnection of the sash, from the second said fixture and the balance cord.

'7. A releasable captive device for selectively arresting a counterbalance tape in a slidable sash assembly and providing a detachable connection between the sash and tape, the device including an arm, a base by which the arm is attached to the side of a sash with the arm projected in a direction laterally of the sash, a grooved element having converging sides with its groove normally presented parallel to and receiving the arm, the grooved element being so connected to the tape as to move therewith, said grooved element and arm being separable by relative vertical movement of the sash and tape, a fixture for mounting adjacent the sashway including resilient tongue-engaging jaws and spaced resilient guide plates, and a second fixture movable with the tape, the second fixture including a tongue in the form of a plate element having a shoulder, the guide plates being adapted to direct the tongue between the jaws, one of the said jaws having a portion formed to interfit the shoulder of the tongue under tension of the tape for arresting same when the arm and grooved element are to be separated.

8. A device for selectively arresting a counterbalance tape in a slidable sash assembly and providing a detachable connection between the sash and tape, a base by which the arm is attached to the side of a sash with the arm projected in a direction laterally of the sash, a grooved element having converging sides with its groove normally presented parallel to and receiving the arm, the converging sides of the grooved element tending to center the arm in parallel relation to the groove of the grooved element, as the arm'is inserted downwardly into such groove, the grooved element being so connected to the tape as to move therewith, the grooved element and arm being readily separable by relative vertical movement of the sash and tape, a fixture for mounting adjacent the sashway including resilient tongueengaging jaws and spaced-resilient guide plates, and a second fixture movable with the tape, the second fixture including a tongue in the form of a plate element having a marginal shoulder, the guide plates being adapted to direct the tongue between the jaws, one of said jaws having a portion formed to interfit the shoulder of the tongue under tension of the tape for arresting same when the arm and grooved element are to be separated.

the first said fixture and the device including an arm,

12 the groove of said grooved element having a bottom notch, and the arm having a portion extending into said notch and tending to keep the arm and grooved member in register.

9. The combination and arrangement of elements as recited by claim 8, but further characterized in that said arm consists of a rigid element having a downwardly presented linear edge portion and further characterized in that said grooved element is formed to present a groove of a substantially V shaped transverse section, the lowermost portion of which is normally abutted by the linear edge portion of said arm, and the converging sides of which tend to center such edge portion in the V shaped groove.

10. In a device for arresting a counterbalance tape, as for removal of sash in a slidable sash and sashway assembly, a fixture for mounting on a side portion of the sash and including a mounting base, a horizontal arm in the form of a piate carried by the base and projecting laterally of the sash, said arm being disposed at an acute angle relative to the plane of the sash, a second fixture to be carried by the tape, and consisting of a plate element, and a projection disposed at an angle relative to the plate element and normally underlying said horizontal arm, a vertical tongue on said second fixture having a shoulder, and a stationary fixture for mounting in the sashway near a limit of travel of the second fixture and including spaced guide plates and resilient tongue-engaging jaws, said guide plates being adapted to direct the tongue be tween the jaws, one of said jaws having a portion formed to engage and detachably to fit the shoulder of the tongue for retention of the second fixture, and retention therewith of the balance tape incident to sash removal.

11. In a device for arresting a counterbalance tape, as for removal of sash in a slidable sash and sashway assembly, a fixture for mounting on a side portion of the sash and including a mounting base, a horizontal arm in the form of a plate carried by the base and projecting laterally of the sash, said arm being disposed at an acute angle relative to the plane of the sash, a second fixture to be carried by the tape, and consisting of a plate element, and a projection disposed at an acute angle relative to the plate element and normally underlying said horizontal arm, a tapered vertical tongue on said second fixture, the fixture provided with a shoulder in the region of the tongue, and a stationary fixture for mounting in the sashway near a limit of travel of the second fixture and including spaced guide plates and resilient tongue-engaging jaws, said guide plates being adapted to direct the tongue between the jaws, one of said jaws having a portion formed to engage and detachably to fit the shoulder for retention of the second fixture, and retention therewith of the balance tape incident to sash removal.

EARL M. TRAMMELL, SR. EARL M. 'I'RAMMELL, JR.

References Gited in the file of this patent UNITED STATES PATENTS Number Name Date 782,086 Vache Feb. '7, 1905 1,070,852 Stanecky Aug. 19, 1913 1,932,906 Muir et al Oct. 31, 1933 

